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#include <streambuf></streambuf>
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#include <qstandardpaths></qstandardpaths>
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#include "tfilepath_io.h"
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#include "timage_io.h"
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#include "trop.h"
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#include "tsystem.h"
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#include "tvectorimage.h"
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#include "tpixelutils.h"
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#include "toonz/toonzscene.h"
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#include "tstrokeprop.h"
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#include "tvectorrenderdata.h"
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#include "tgl.h"
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#include "tmathutil.h"
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#include "toonz/mypaintbrushstyle.h"
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#include <qdebug></qdebug>
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#include <sstream></sstream>
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//=============================================================================
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MyPaintBrushStrokeProp::MyPaintBrushStrokeProp(const TStroke *stroke,
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                                               TMyPaintBrushStyle *style)
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    : TStrokeProp(stroke)
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    , m_colorStyle(style)
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    , m_outline()
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    , m_outlinePixelSize(0) {
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  m_styleVersionNumber = m_colorStyle->getVersionNumber();
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  m_altStyle.setMainColor(style->getMainColor());
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}
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//-----------------------------------------------------------------------------
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TStrokeProp *MyPaintBrushStrokeProp::clone(const TStroke *stroke) const {
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  MyPaintBrushStrokeProp *prop =
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      new MyPaintBrushStrokeProp(stroke, m_colorStyle);
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  prop->m_strokeChanged    = m_strokeChanged;
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  prop->m_outline          = m_outline;
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  prop->m_outlinePixelSize = m_outlinePixelSize;
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  return prop;
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}
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//-----------------------------------------------------------------------------
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const TColorStyle *MyPaintBrushStrokeProp::getColorStyle() const {
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  return m_colorStyle;
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}
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//-----------------------------------------------------------------------------
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void MyPaintBrushStrokeProp::draw(const TVectorRenderData &rd) {
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  if (rd.m_clippingRect != TRect() && !rd.m_is3dView &&
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      !convert(rd.m_aff * m_stroke->getBBox()).overlaps(rd.m_clippingRect))
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    return;
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  glPushMatrix();
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  tglMultMatrix(rd.m_aff);
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  double pixelSize = sqrt(tglGetPixelSize2());
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  if (m_stroke->isCenterLine()) {
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    TCenterLineStrokeStyle *appStyle =
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        new TCenterLineStrokeStyle(m_colorStyle->getAverageColor(), 0, 0);
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    appStyle->drawStroke(rd.m_cf, m_stroke);
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    delete appStyle;
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  } else {
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    if (!isAlmostZero(pixelSize - m_outlinePixelSize, 1e-5) ||
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        m_strokeChanged ||
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        m_styleVersionNumber != m_colorStyle->getVersionNumber()) {
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      m_strokeChanged    = false;
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      m_outlinePixelSize = pixelSize;
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      TOutlineUtil::OutlineParameter param;
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      m_outline.getArray().clear();
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      m_altStyle.computeOutline(m_stroke, m_outline, param);
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      m_styleVersionNumber = m_colorStyle->getVersionNumber();
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    }
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    if (rd.m_antiAliasing)
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      m_altStyle.drawStroke(rd.m_cf, &m_outline, m_stroke);
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    else
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      m_altStyle.drawAliasedStroke(rd.m_cf, &m_outline, m_stroke);
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  }
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  glPopMatrix();
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}
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//*************************************************************************************
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//    TMyPaintBrushStyle  implementation
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//*************************************************************************************
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TMyPaintBrushStyle::TMyPaintBrushStyle() {}
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//-----------------------------------------------------------------------------
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TMyPaintBrushStyle::TMyPaintBrushStyle(const TFilePath &path) {
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  loadBrush(path);
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}
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//-----------------------------------------------------------------------------
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TMyPaintBrushStyle::TMyPaintBrushStyle(const TMyPaintBrushStyle &other)
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    : TColorStyle(other)
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    , m_path(other.m_path)
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    , m_fullpath(other.m_fullpath)
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    , m_brushOriginal(other.m_brushOriginal)
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    , m_brushModified(other.m_brushModified)
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    , m_preview(other.m_preview)
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    , m_color(other.m_color)
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    , m_baseValues(other.m_baseValues) {}
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//-----------------------------------------------------------------------------
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TMyPaintBrushStyle::~TMyPaintBrushStyle() {}
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//-----------------------------------------------------------------------------
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TColorStyle *TMyPaintBrushStyle::clone(std::string brushIdName) const {
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  TMyPaintBrushStyle *style = new TMyPaintBrushStyle(*this);
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  style->loadBrush(TFilePath(getBrushIdNameParam(brushIdName)));
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  return style;
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}
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//-----------------------------------------------------------------------------
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TColorStyle &TMyPaintBrushStyle::copy(const TColorStyle &other) {
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  const TMyPaintBrushStyle *otherBrushStyle =
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      dynamic_cast<const *="" tmypaintbrushstyle="">(&other);</const>
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  if (otherBrushStyle) {
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    m_path          = otherBrushStyle->m_path;
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    m_fullpath      = otherBrushStyle->m_fullpath;
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    m_brushOriginal = otherBrushStyle->m_brushOriginal;
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    m_brushModified = otherBrushStyle->m_brushModified;
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    m_preview       = otherBrushStyle->m_preview;
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    m_baseValues    = otherBrushStyle->m_baseValues;
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  }
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  assignBlend(other, other, 0.0);
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  return *this;
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}
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//-----------------------------------------------------------------------------
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QString TMyPaintBrushStyle::getDescription() const {
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  return "MyPaintBrushStyle";
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}
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//-----------------------------------------------------------------------------
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std::string TMyPaintBrushStyle::getBrushIdName() const {
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  std::wstring ws = m_path.getWideString();
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  const std::string s(ws.begin(), ws.end());
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  return "MyPaintBrushStyle:" + s;
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}
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//-----------------------------------------------------------------------------
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std::string TMyPaintBrushStyle::getBrushType() { return "myb"; }
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//-----------------------------------------------------------------------------
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TFilePathSet TMyPaintBrushStyle::getBrushesDirs() {
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  TFilePathSet paths;
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  paths.push_back(m_libraryDir + "mypaint brushes");
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  QStringList genericLocations =
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      QStandardPaths::standardLocations(QStandardPaths::GenericDataLocation);
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  for (QStringList::iterator i = genericLocations.begin();
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       i != genericLocations.end(); ++i)
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    paths.push_back(TFilePath(*i) + "mypaint" + "brushes");
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  return paths;
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}
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//-----------------------------------------------------------------------------
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TFilePath TMyPaintBrushStyle::decodePath(const TFilePath &path) const {
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  if (path.isAbsolute()) return path;
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  if (m_currentScene) {
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    TFilePath p = m_currentScene->decodeFilePath(path);
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    TFileStatus fs(p);
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    if (fs.doesExist() && !fs.isDirectory()) return p;
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  }
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  TFilePathSet paths = getBrushesDirs();
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  for (TFilePathSet::iterator i = paths.begin(); i != paths.end(); ++i) {
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    TFilePath p = *i + path;
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    TFileStatus fs(p);
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    if (fs.doesExist() && !fs.isDirectory()) return p;
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  }
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  return path;
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}
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//-----------------------------------------------------------------------------
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static std::string mybToVersion3(std::string origStr) {
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  std::string outStr   = "";
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  std::string comment  = "";
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  bool settingsStarted = false;
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  std::stringstream strstream(origStr);
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  outStr += "{\n";
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  for (std::string line; std::getline(strstream, line);) {
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    std::replace(line.begin(), line.end(), '\r', ' ');
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    if (line.find("version 2") != std::string::npos)
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      continue;  // Ignore version.  We'll add version back later as version 3
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    if (line[0] == '#') {
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      comment = comment + line;
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      continue;
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    }
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    if (!settingsStarted) {
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      settingsStarted = true;
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      outStr += "    \"comment\": \"" + comment + "\",\n";
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      outStr += "    \"group\": \"\",\n";
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      outStr += "    \"parent_brush_name\": \"\",\n";
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      outStr += "    \"settings\": {\n";
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    } else
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      outStr += ",\n";
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    int startPos = 0;
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    int pipe     = line.find("|");
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    std::string settingInfo = line.substr(startPos, pipe);
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    std::string setting     = settingInfo.substr(startPos, line.find(" "));
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    std::string baseValue =
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        settingInfo.substr(setting.length(), settingInfo.find_last_not_of(" "));
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    outStr += "        \"" + setting + "\": {\n";
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    outStr += "            \"base_value\": " + baseValue + ",\n";
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    if (pipe == std::string::npos)
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      outStr += "            \"inputs\": {}";
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    else {
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      outStr += "            \"inputs\": {\n";
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      while (pipe != line.length()) {
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        if (startPos > 0) outStr += ",\n";
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        startPos = pipe + 1;
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        pipe     = line.find("|", startPos);
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        if (pipe == std::string::npos) pipe = line.length();
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        settingInfo      = line.substr(startPos, pipe - startPos);
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        int firstCharPos = settingInfo.find_first_not_of(" ");
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        setting          = settingInfo.substr(firstCharPos,
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                                              settingInfo.find(" ", firstCharPos) - 1);
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        outStr += "                \"" + setting + "\": [\n";
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        firstCharPos = settingInfo.find_first_not_of(" ", setting.length() + 1);
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        baseValue    = settingInfo.substr(firstCharPos, pipe - startPos);
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        int comma    = baseValue.find(", ");
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        if (comma == std::string::npos) comma = baseValue.length();
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        std::string value = baseValue.substr(0, comma);
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        std::replace(value.begin(), value.end(), '(', '[');
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        std::replace(value.begin(), value.end(), ')', ']');
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        std::replace(value.begin(), value.end(), ' ', ',');
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        outStr += "                    " + value;
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        int prevComma;
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        while (comma != baseValue.length()) {
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          outStr += ",\n";
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          prevComma = comma + 2;
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          comma     = baseValue.find(", ", prevComma);
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          if (comma == std::string::npos) comma = baseValue.length();
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          value = baseValue.substr(prevComma, comma - prevComma);
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          std::replace(value.begin(), value.end(), '(', '[');
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          std::replace(value.begin(), value.end(), ')', ']');
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          std::replace(value.begin(), value.end(), ' ', ',');
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          outStr += "                    " + value;
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        }
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        outStr += "\n                ]";  // Ends Input setting
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      }
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      outStr += "\n            }";  // End Inputs
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    }
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    outStr += "\n        }";  // End Setting
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  }
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  outStr += "\n";
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  if (settingsStarted) {
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    outStr += "    },\n";  // End Settings
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    outStr += "    \"version\": 3\n";
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  }
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  outStr += "}";  // Ends file
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  return outStr;
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}
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void TMyPaintBrushStyle::loadBrush(const TFilePath &path) {
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  m_path     = path;
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  m_fullpath = decodePath(path);
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  m_brushOriginal.fromDefaults();
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  Tifstream is(m_fullpath);
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  if (is) {
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    std::string str;
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    str.assign(std::istreambuf_iterator<char>(is),</char>
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               std::istreambuf_iterator<char>());</char>
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    if (str.find("version 2") != std::string::npos) str = mybToVersion3(str);
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    m_brushOriginal.fromString(str);
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  }
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  m_brushModified = m_brushOriginal;
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  std::map<mypaintbrushsetting, float=""> baseValuesCopy;</mypaintbrushsetting,>
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  baseValuesCopy.swap(m_baseValues);
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  for (std::map<mypaintbrushsetting, float="">::const_iterator i =</mypaintbrushsetting,>
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           baseValuesCopy.begin();
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       i != baseValuesCopy.end(); ++i)
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    setBaseValue(i->first, i->second);
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  TFilePath preview_path =
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      m_fullpath.getParentDir() + (m_fullpath.getWideName() + L"_prev.png");
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  TImageReader::load(preview_path, m_preview);
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  invalidateIcon();
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}
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//-----------------------------------------------------------------------------
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void TMyPaintBrushStyle::setBaseValue(MyPaintBrushSetting id, bool enable,
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                                      float value) {
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  float def = m_brushOriginal.getBaseValue(id);
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  if (enable && fabsf(value - def) > 0.01) {
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    m_baseValues[id] = value;
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    m_brushModified.setBaseValue(id, value);
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  } else {
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    m_baseValues.erase(id);
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    m_brushModified.setBaseValue(id, def);
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  }
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}
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//-----------------------------------------------------------------------------
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void TMyPaintBrushStyle::resetBaseValues() {
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  for (int i = 0; i < MYPAINT_BRUSH_SETTINGS_COUNT; ++i)
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    setBaseValueEnabled((MyPaintBrushSetting)i, false);
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}
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//-----------------------------------------------------------------------------
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void TMyPaintBrushStyle::makeIcon(const TDimension &d) {
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  TFilePath path =
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      m_fullpath.getParentDir() + (m_fullpath.getWideName() + L"_prev.png");
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  TPointD offset(0, 0);
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  if (!m_preview) {
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    m_icon = TRaster32P(d);
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    m_icon->fill(TPixel32::Red);
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  } else if (m_preview->getSize() == d) {
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    m_icon = m_preview;
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  } else {
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    m_icon = TRaster32P(d);
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    if (d.lx != d.ly) {
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      TPixel32 col = getMainColor();
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      if (col.m == 255)
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        m_icon->fill(col);
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      else {
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        TRaster32P fg(d);
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        fg->fill(premultiply(col));
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        TRop::checkBoard(m_icon, TPixel32::Black, TPixel32::White,
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                         TDimensionD(6, 6), TPointD());
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        TRop::over(m_icon, fg);
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      }
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    }
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    double sx    = (double)d.lx / (double)m_preview->getLx();
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    double sy    = (double)d.ly / (double)m_preview->getLy();
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    double scale = std::min(sx, sy);
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    TRaster32P resamplePreview(m_preview->getLx(), m_preview->getLy());
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    TRop::resample(resamplePreview, m_preview, TScale(scale),
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                   TRop::ResampleFilterType::Hamming3);
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    TRop::over(m_icon, resamplePreview);
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  }
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  // paint color marker
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  // Only show color marker when the icon size is 22x22
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  if (d.lx == d.ly && d.lx <= 22) {
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    int size       = std::min(1 + std::min(d.lx, d.ly) * 2 / 3,
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                              1 + std::max(d.lx, d.ly) / 2);
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    TPixel32 color = getMainColor();
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    color.m        = 255;  // show full opac color
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    for (int y = 0; y < size; ++y) {
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      TPixel32 *p    = m_icon->pixels(d.ly - y - 1);
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      TPixel32 *endp = p + size - y - 1;
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      for (; p != endp; ++p) *p = color;
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      *p = blend(*p, color, 0.5);
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    }
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  }
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}
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//------------------------------------------------------------
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void TMyPaintBrushStyle::loadData(TInputStreamInterface &is) {
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  std::string path;
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  is >> path;
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  is >> m_color;
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  loadBrush(TFilePath(path));
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  int baseSettingsCount = 0;
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  is >> baseSettingsCount;
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  for (int i = 0; i < baseSettingsCount; ++i) {
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    std::string key;
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    double value    = 0.0;
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    int inputsCount = 0;
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    is >> key;
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    is >> value;
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    const mypaint::Setting *setting = mypaint::Setting::findByKey(key);
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    if (setting) setBaseValue(setting->id, value);
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  }
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}
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//-----------------------------------------------------------------------------
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void TMyPaintBrushStyle::saveData(TOutputStreamInterface &os) const {
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  std::wstring wstr = m_path.getWideString();
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  std::string str;
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  str.assign(wstr.begin(), wstr.end());
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  os << str;
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  os << m_color;
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  os << (int)m_baseValues.size();
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  for (std::map<mypaintbrushsetting, float="">::const_iterator i =</mypaintbrushsetting,>
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           m_baseValues.begin();
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       i != m_baseValues.end(); ++i) {
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    os << mypaint::Setting::byId(i->first).key;
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    os << (double)i->second;
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  }
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}
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//-----------------------------------------------------------------------------
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int TMyPaintBrushStyle::getParamCount() const {
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  return MYPAINT_BRUSH_SETTINGS_COUNT;
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}
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//-----------------------------------------------------------------------------
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QString TMyPaintBrushStyle::getParamNames(int index) const {
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  return QString::fromUtf8(
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      mypaint::Setting::byId((MyPaintBrushSetting)index).name.c_str());
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}
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//-----------------------------------------------------------------------------
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TColorStyle::ParamType TMyPaintBrushStyle::getParamType(int index) const {
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  return DOUBLE;
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}
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//-----------------------------------------------------------------------------
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bool TMyPaintBrushStyle::hasParamDefault(int index) const { return true; }
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//-----------------------------------------------------------------------------
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void TMyPaintBrushStyle::setParamDefault(int index) {
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  setBaseValueEnabled((MyPaintBrushSetting)index, false);
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}
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//-----------------------------------------------------------------------------
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bool TMyPaintBrushStyle::isParamDefault(int index) const {
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  return getBaseValueEnabled((MyPaintBrushSetting)index);
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}
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//-----------------------------------------------------------------------------
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void TMyPaintBrushStyle::getParamRange(int index, double &min,
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                                       double &max) const {
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  const mypaint::Setting &setting =
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      mypaint::Setting::byId((MyPaintBrushSetting)index);
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  min = setting.min;
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  max = setting.max;
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}
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//-----------------------------------------------------------------------------
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void TMyPaintBrushStyle::setParamValue(int index, double value) {
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  setBaseValue((MyPaintBrushSetting)index, value);
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}
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//-----------------------------------------------------------------------------
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double TMyPaintBrushStyle::getParamValue(double_tag, int index) const {
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  return getBaseValue((MyPaintBrushSetting)index);
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}
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//-----------------------------------------------------------------------------
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namespace {
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TColorStyle::Declaration mypaintBrushStyle(new TMyPaintBrushStyle());
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}